Abstract. The next generation Photonic Integrated Circuit (PIC) make use of optical power divider for achieving high operating speeds in the field of optical communication. A Wilkinson power divider is designed using 2D Photonic Crystal in this paper. Wilkinson power divider is three port network which is lossy. But when the output ports are matched, it has unique property of becoming losslesss. The divider also achieves isolation between output ports. The power dissipated is from the power that is reflected. The propagation of wave and photonic band gap were obtained by Finite-difference Time-Domain (FDTD).The designed structure has a resonant wavelength of 1550 nm. The simulation is performed using Opti FDTD software. For the two port Wilkinson power divider 55.4% of input power was coupled at the output. For the 4 port 55% of input power was coupled at the output port.

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